High Performance Control of a Single-Phase Shunt Active Filter

Abstract

Abstract-Shunt active power filters are devices, connected in parallel with nonlinear and reactive loads, which are in charge of compensating these characteristics in order to assure the quality of the distribution network. This paper analyzes the dynamics of a dc bus split-capacitor boost converter used as an active filter and proposes a control system which guarantees the desired closedloop performance (unity power factor and load-current harmonics and reactive-power compensation). The proposed controller is hierarchically decomposed into two control loops, one in charge of shaping the network current and the other in charge of assuring the power balance. Unlike previous works that appeared in the literature, both control loops are analytically tuned. This paper describes the analytical design of the controller and presents some experimental results that show the good performance of the closedloop system.

The Internal Model Principle for Systems with Unbounded Control and Observation

“…In particular, robust tracking and disturbance rejection of any given continuous periodic reference and disturbance signals y * ref (t) and w * (t), respectively, can be formulated as a robust output regulation problem for an infinite-dimensional exosystem [12,15]. Tracking of nonsmooth periodic and almost periodic signals with high accuracy is necessary, e.g., in the control of disk drive systems and robot arms [29,10], and in power electronics [3].Recent years have seen many succesful efforts in the development of the state space theory of robust output regulation for distributed parameter systems with infinite-dimensional exosystems [11,16,9,19]. In particular, the p-copy internal model principle of Francis and Wonham [7], and Davison [5] was extended for infinite-dimensional linear systems by the current authors in [16].…”

“…In particular, robust tracking and disturbance rejection of any given continuous periodic reference and disturbance signals y * ref (t) and w * (t), respectively, can be formulated as a robust output regulation problem for an infinite-dimensional exosystem [12,15]. Tracking of nonsmooth periodic and almost periodic signals with high accuracy is necessary, e.g., in the control of disk drive systems and robot arms [29,10], and in power electronics [3].…”

Active impedance‐based single‐phase hybrid active power filter

“…In the past three decades, different harmonic mitigation techniques have been reported in the literature. The work ranges from passive inductance-capacitance (LC) filters [6], pure shunt active power filters (APFs) [7,8], series APF [9,10], hybrid active power filters (HAPFs) [11][12][13] to unified power quality conditioner (UPQC) [14]. The performance of passive LC filters depends on system impedance, series/parallel resonance, and aging effect [15,16], and they are unsuitable for variable reactive power [17].…”

Mitigation of Switching Frequency by Utilizing Singlestage Active Power Filter With a Double Band Hysteresis Control

“…As a solution for this, APFs are broadly utilized for wiping out the undesirable current harmonics and making strides the power factor. The shunt APF [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] is required to inject compensating current flows into the PCC for each stage. With the end goal to have the capacity to acquire sinusoidal supply flows which have no stage distinction with the supply voltages, the injected compensating currents must have a similar adequacy and 180 0 stage contrast to those of the load current harmonics.…”

“…These problems can be diminished by expanding the hysteresis band, to the detriment of diminishing the switching losses. In this way, the hysteresis band is to be made a tradeoff between switching losses and switching frequency of the APF [17][18][19][20].…”